Hedge fund billionaire Bill Ackman likely to back Donald Trump Financial TimesBillionaires Back Trump Despite Guilty Verdict in Hush Money Trial BloombergBill Ackman likely to back Donald Trump for president after supporting RFK Jr., Nikki Haley CNBCBillionaire investor Ackman considering backing Trump in US election, source says ReutersBillionaire Ackman To Endorse Trump, Report Says Forbes